Keeping cursor in a TextBox?

I have a couple of TextBox that require a numeric value. What is the correct flow of events to make sure that a TB cannot advance to another control without a valid value?

Thanks!
BlakeMcKennaAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Fernando SotoRetiredCommented:
Hi BlakeMcKenna;

For the TextBox you wish to check to see if the value is numeric use the Validating event handler as shown below. Warning once you enter the text box you will not be allowed to leave unless a numeric value is entered into it or you place logic in here to allow differently.
Private Sub TextBox1_Validating(sender As Object, e As System.ComponentModel.CancelEventArgs) Handles TextBox1.Validating

    If Not IsNumeric(TextBox1.Text) Then
        e.Cancel = True
        MessageBox.Show("Value must be numeric, please correct. You will NOT be allowed to continue unless corrected.")
    End If

End Sub

Open in new window

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
BlakeMcKennaAuthor Commented:
Thank you Fernando!
Fernando SotoRetiredCommented:
Not a problem, glad to help.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Visual Basic.NET

From novice to tech pro — start learning today.